Biomass-derived multiatom-doped carbon dots for the photocatalytic reduction of Cr(VI) and precipitation of Cr(III)
Abstract The release of heavy metal ions, especially hexavalent chromium [Cr(VI)], from industrial processes poses significant health and environmental risks. Cr(VI) does not readily degrade but can be reduced to the less toxic trivalent form [Cr(III)] that exhibits lower adsorption, making it easie...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | npj Clean Water |
| Online Access: | https://doi.org/10.1038/s41545-024-00426-2 |
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| author | Gunture Tae Yoon Lee |
| author_facet | Gunture Tae Yoon Lee |
| author_sort | Gunture |
| collection | DOAJ |
| description | Abstract The release of heavy metal ions, especially hexavalent chromium [Cr(VI)], from industrial processes poses significant health and environmental risks. Cr(VI) does not readily degrade but can be reduced to the less toxic trivalent form [Cr(III)] that exhibits lower adsorption, making it easier to manage and remove from environmental systems. This paper proposes a single-step solvothermal method to synthesize fluorescent multiatom-doped (N, K, Cl, Mg, and Ca) carbon dots (MACDs) from Kalanchoe pinnata leaves (carbon precursor) and ethanol (solvent). These MACDs serve as effective photocatalysts for Cr(VI) reduction under one sun illumination (AM 1.5 G conditions). The reaction achieved a 91% Cr(VI) removal from a 20 ppm deionized water solution in 420 min and complete removal (100%) in an acidic solution with the same initial concentration in 120 min. The MACDs demonstrated excellent photocatalytic performance across tap, river, and lake water. These biomass-derived MACDs demonstrate strong potential for effective Cr-contaminated water remediation. |
| format | Article |
| id | doaj-art-298c76dcbb9e4b9f96fb96894b4ac423 |
| institution | Kabale University |
| issn | 2059-7037 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Clean Water |
| spelling | doaj-art-298c76dcbb9e4b9f96fb96894b4ac4232024-12-29T12:08:48ZengNature Portfolionpj Clean Water2059-70372024-12-017111110.1038/s41545-024-00426-2Biomass-derived multiatom-doped carbon dots for the photocatalytic reduction of Cr(VI) and precipitation of Cr(III)Gunture0Tae Yoon Lee1Department of Biomedical Engineering and Department of Convergence System Engineering, Chungnam National UniversityDepartment of Biomedical Engineering and Department of Convergence System Engineering, Chungnam National UniversityAbstract The release of heavy metal ions, especially hexavalent chromium [Cr(VI)], from industrial processes poses significant health and environmental risks. Cr(VI) does not readily degrade but can be reduced to the less toxic trivalent form [Cr(III)] that exhibits lower adsorption, making it easier to manage and remove from environmental systems. This paper proposes a single-step solvothermal method to synthesize fluorescent multiatom-doped (N, K, Cl, Mg, and Ca) carbon dots (MACDs) from Kalanchoe pinnata leaves (carbon precursor) and ethanol (solvent). These MACDs serve as effective photocatalysts for Cr(VI) reduction under one sun illumination (AM 1.5 G conditions). The reaction achieved a 91% Cr(VI) removal from a 20 ppm deionized water solution in 420 min and complete removal (100%) in an acidic solution with the same initial concentration in 120 min. The MACDs demonstrated excellent photocatalytic performance across tap, river, and lake water. These biomass-derived MACDs demonstrate strong potential for effective Cr-contaminated water remediation.https://doi.org/10.1038/s41545-024-00426-2 |
| spellingShingle | Gunture Tae Yoon Lee Biomass-derived multiatom-doped carbon dots for the photocatalytic reduction of Cr(VI) and precipitation of Cr(III) npj Clean Water |
| title | Biomass-derived multiatom-doped carbon dots for the photocatalytic reduction of Cr(VI) and precipitation of Cr(III) |
| title_full | Biomass-derived multiatom-doped carbon dots for the photocatalytic reduction of Cr(VI) and precipitation of Cr(III) |
| title_fullStr | Biomass-derived multiatom-doped carbon dots for the photocatalytic reduction of Cr(VI) and precipitation of Cr(III) |
| title_full_unstemmed | Biomass-derived multiatom-doped carbon dots for the photocatalytic reduction of Cr(VI) and precipitation of Cr(III) |
| title_short | Biomass-derived multiatom-doped carbon dots for the photocatalytic reduction of Cr(VI) and precipitation of Cr(III) |
| title_sort | biomass derived multiatom doped carbon dots for the photocatalytic reduction of cr vi and precipitation of cr iii |
| url | https://doi.org/10.1038/s41545-024-00426-2 |
| work_keys_str_mv | AT gunture biomassderivedmultiatomdopedcarbondotsforthephotocatalyticreductionofcrviandprecipitationofcriii AT taeyoonlee biomassderivedmultiatomdopedcarbondotsforthephotocatalyticreductionofcrviandprecipitationofcriii |